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1 <br />' 05 December 2002 <br /> AGE-NC Project No 02-0964 <br />' Page 6 of 7 <br />' 5.0. SUMMARY AND CONCLUSIONS <br /> The findings from the October 2002 ground water monitoring event are as follows <br />' • Ground water flow direction at the water table was towards the cast to northeast at a gradient <br /> of 0 01 ft/ft The ground water elevation at the site has decreased 1 foot over the quarter <br />' • The average ground water elevation was approximately 16 6 feet below MSL The ground <br /> water elevation was within the screen Intervals of the wells, water samples should yield <br /> analytical data fully representative of shallow ground water conditions <br />' • TPH-g and TPH-d were detected only in the ground water sample from well MW-1, at <br /> concentrations of 21,000 µg/1 and 93 µg/l, respectively <br />' • BTEX compound were detected only in sample MW-1 The concentrations of benzene, <br /> ethylbenzene and xylenes were significantly above the DHS's Maximum Contaminant <br /> Levels for these compounds in drinking water <br /> • The vertical extent, and the lateral extent of petroleum hydrocarbon-impacted ground water <br /> to the northeast and directly east have not been delineated <br /> 6.0. RECOMMENDATIONS <br /> Based on the findings of this investigation, AGE recommends <br /> • Continue quarterly ground water monitoring, the next monitoring event is scheduled for <br /> January 2003 <br /> • Continued lateral and vertical site assessment utilizing depth discrete sampling methods or <br /> placement of additional monitoring wells <br /> I • Preparation of a corrective action plan (CAP) <br /> I <br /> Advanced GeoEnvironmental,Inc <br /> I <br />